Muffler.



No. 832,124. y PATENTED 00T. 2, 1906.

- s. E. FARMER. Y

` MUPBLER. APYgLIo'ATIoN FILED Nov. 1, 1905.

UNITED srzirns PATENT FFICE.

Speccationbf Letters Patent.

Patented'oct. 2, 1906.

Application filed November l. 1905. .Serial No. 25,458.

To a/ZZ whom it may concern: d

Beit known that I, SILAs E. FARMER, a citizen of the United States, residing at 3144 Durrell avenue, Cincinnati, in the county of Hamilton and State of Ohio, h'ave invented new and useful Improvements in Mufflers, of which the following is yav specification.`

This invention relates to certain new and l useful improvements ilnmufliers, of which thefollowing is a full, clear, and exact de-v scription.

This lnvention contemplates a muffler to be usedin connection with the exhaust of engines, and particularly explosive-engines.

' The object of this invention is to arrange Within the muffler revolving means operatedV by the pressure of the exhaust for splitting the force thereof'with the least possible back pressure.

A further object of this ,invention is to produce a muffler which While highly efficient v vtion in elevation of the invention.

- pipe 6, from the engine-exhaust.

will be comparatively simple and inexpensive to manufacture. A

Referring to the accompanying drawings, forming a p'art vof this application, and in which like' numeralsof reference designate corresponding parts throughout the several views, Figure 1 is a vertical longitudinal sec- Fig. 2 is a view in elevation of one end with the inletpipe in section. Fig. 3 is asectional view taken on line X X of Fig. 1, and Fig. 4 is a sectional view taken on line Z Z of Fig. 1.

Reference-numeral 1 designates the cylindrical casing, which is secured in any suitable manner to the flanges 2 of the end plates 3 and 4. The rear plate 3 is provided with. an inlet-openingv 5, within which is secured the To the front plate 4 is secured a conical shell 7, provided With theusual outlet 8 to the atmosphere.

Openings 8 are provided in the front plate 4, and a spider 9 is arranged on one side of the plate 4 to regulate the openings 8. This spideris secured between the flanged edge 1 1 of reduced and passed through the end plates,

being stationary therein and secured by nuts 14, threaded on the said reduced ends. It

will be Observed that the saidl disk 10 is secured in position against the hub 12 by one of" the said nuts. Mountedon the said shaft is a plurality of rotating wheels, the alternate wheels rotating in the opposite direction from that in which the others turn. Each of the hubs 15 of the wheels is provided with an annular flange 16, which embraces the hub of the adjacent wheel. The adjacent faces of the hubs and end plates are each provided with an annular' groove 17 or race for the reception of a series of ball-bearings 18, which take up the end thrust which is apt to occur. The blades 19 of the wheels are arranged an angle., and the distance between the blades of each wheel is `slightly less than the diameter of the inlet-poit 5 to always insure rotation of the wheels.

The operation is as follows: Upon the ex haust from pipe 6 striking the first wheel said wheel will be caused to rotate by reason of its being pitched, and as the force of the exhaustv strikes the succeeding wheel the same is caused to rotate by the opposite inclination of its blades in an opposite direction, and so the operation is repeated throughout the series. T he exhaust is permitted to escape from the muffler proper through the openings 8 into the conical shell 7. Attention is called to the 'fact that the speed at which the Wheels rotate is governed by the opening and closing of the openings S, governed by the spider 9.

By this construction it will be seen that there is little back pressure, as the wheels do not offer the resistance of a stationary body,`

as in the ordinary typo of muffler, but at the same time a complete displacement of the exhaust through the splitting of the force thereof by the oppositely-rotating blades.

lt is not intended that this invention be limit-ed to the details of construction, as various changes may be made within the scope thereof.

Having fully described this invention, what is claimed new and useful, and desired to be secured by Letters Patent, is

1. A muffler comprising a casing, a stav`v`ionary shaft therein, and a plurality of alternately oppositely rotating impeding elements.

2. A muffler comprising a casing, a stationary shaft therein, and a plurality of IOO blades on the shaft, the alternate bladesbeing rotatable in opposite directions by the exf haust ofthe engine.

3. A muffler eomprisinv a easing, a ste--v 5 tionary shaft therein, blades mounted on the shaft, the alternate blades being rotatable in 1 opposite directions by the exhaust from the englne, and ball-bearings between the adjacent faces of the blades, and the-casing and the blades. v

' In testimony whereof I aIX my signature in presence of two subsoribin Witnesses.

SILAS FARMER. VJitnesses: v

GEORGE DKIMBELL, 'HERBERT A.WR1GHT. 

